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Police said a lot of people had interactions with the victims as the men walked through Portland late Tuesday night into Wednesday morning.

At a news conference on Thursday, Sauschuck said, "We would love to talk to those individuals to corroborate certain portions of our timeline and the timeline only. It's not that we doubt what our victims are telling us; we're just trying to put an actual time - exact times - to the locations that they specify they were at throughout the evening."

Sauschuck said police do have video evidence from Tuesday night, but he said there is no footage of the actual shooting.

Portland police have identified the man shot and killed early Wednesday morning in Portland.

Matthew Blanchard, 24, of South Portland, was shot and killed in the area of Congress and India streets.

The Maine medical examiner's office issued its findings Thursday in the case of Blanchard. It said Blanchard died from a gunshot wound to the chest.

Blanchard was also facing charges in a fatal car crash in Falmouth last month. Blanchard's girlfriend, Casey Green, was the woman who was killed in the crash on June 22.

Sauschuck said John Howard and Josh Hersom were also shot, but their injuries are not life-threatening.

Witnesses told police they heard a loud argument before shots were fired. They told police that two men ran from the scene.